I have had a "blood blister" on my bottom lip
for more than a year now. It sort of gets better in the winter time. I remember going to a dermatologist once when I was younger and him giving me steroids for it and it kind of went away, but not all the way. My bottom lip
is very sensitive to foods that are acidic and spicy
. Toothpaste kills! I do have Polymorphous light eruption and I am wondering if it has anything to do with it? Or maybe if it's Bullous Pemphigoid?